CVE-2021-41821: wazuh Integer Underflow (Wrap or Wraparound)
CVSS: 6.5v3.1MediumModified
Published 29-09-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-41821 is a medium (CVSS 6.5) Integer Underflow (Wrap or Wraparound) vulnerability in wazuh. EPSS estimates a 1.11% chance of exploitation in the next 30 days, higher than 65.5% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
1.11%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 29-09-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Wazuh Manager in Wazuh through 4.1.5 is affected by a remote Integer Underflow vulnerability that might lead to denial of service. A crafted message must be sent from an authenticated agent to the manager.
CVSS metrics
2 scores · 1 source · 2 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesSingle source
Medium 4.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:S/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.11%
Chance of exploitation in the next 30 days
Percentile
66%
Versus all other CVEs
30-day change
0.00 pp
From 1.11% on 19-09-2026
19-09-202619-10-2026
EPSS score1.11%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundWazuh
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Wazuh1 product
- wazuh≤ 4.1.5
1 vendor · 1 product
References
2 links- documentation.wazuh.com/current/release-notes/release_4_2_0.htmlX Refsource MISCRelease NotesVendor Advisory